Seat cushion

ABSTRACT

A seat cushion includes a cushion body and a connecting device for connecting detachably the cushion body to a chair unit. The cushion body includes a seat cushion portion adapted to be disposed on a seat member of the chair unit, a back cushion portion connected to the seat cushion portion, and two arm cushion portions connected respectively to left and right sides of the seat cushion portion and adapted to cover armrests of the chair unit. The connecting device includes two side connecting units, each of which includes inter-engageable first and second fastening units connected to the respective arm cushion portion proximate to and distal from the seat cushion portion, respectively, for positioning the respective arm cushion portion on the respective armrest.

BACKGROUND OF THE INVENTION

1. Field of the Invention

The invention relates to a seat cushion, more particularly to a seat cushion for an armchair.

2. Description of the Related Art

Generally, an armchair includes a seat, a backrest, a plurality of legs, and two armrests. The seat and the backrest are interconnected to form an L-shaped frame. The legs are connected to the seat. The armrests are disposed respectively at two sides of the seat.

During use, a seat cushion is usually placed on the armchair to make the user comfortable. The seat cushion usually corresponds to the seat of the armchair. However, some conventional seat cushions have an L-shaped body so as to correspond to the seat and the backrest of the armchair for added comfort.

Since the hands of the user can rest on the armrests, and since the conventional seat cushions for the armchair do not include cushions for the armrests, the armchair is still uncomfortable to use.

SUMMARY OF THE INVENTION

Therefore, the object of the present invention is to provide a seat cushion which includes armrest cushion portions for added comfort during use of a chair unit.

According to this invention, a seat cushion is adapted to be detachably connected to a chair unit. The chair unit includes a seat member, a leg unit for supporting the seat member on the ground, a backrest connected to the seat member, and two armrests disposed respectively at two sides of the seat member. The seat cushion comprises a cushion body and a connecting device. The cushion body includes a seat cushion portion adapted to be disposed on the seat member, a back cushion portion connected to a rear side of the seat cushion portion, and two arm cushion portions connected respectively to left and right sides of the seat cushion portion and adapted to cover the armrests. The connecting device connects detachably the cushion body to the chair unit, and includes two side connecting units for positioning respectively the arm cushion portions on the armrests. Each of the side connecting units includes a first fastening unit connected to a respective one of the arm cushion portions proximate to the seat cushion portion, and a second fastening unit connected to the respective one of the arm cushion portions distal from the seat cushion portion. The first and second fastening units are inter-engaged to position the respective one of the arm cushion portions on the respective one of the armrests.

BRIEF DESCRIPTION OF THE DRAWINGS

Other features and advantages of the present invention will become apparent in the following detailed description of the preferred embodiments with reference to the accompanying drawings, of which:

FIG. 1 is a perspective view of the first preferred embodiment of a seat cushion according to the present invention prior to mounting on a chair unit;

FIG. 2 is a partly sectional view of the first preferred embodiment in a state of use;

FIG. 3 is a fragmentary enlarged sectional view of the first preferred embodiment, illustrating how an arm cushion portion is positioned on one of the armrests of the chair unit;

FIG. 4 is a perspective view of the first preferred embodiment in a state of use; and

FIG. 5 is a fragmentary enlarged sectional view of the second preferred embodiment of a seat cushion according to the present invention, illustrating how an arm cushion portion is positioned on one of the armrests of the chair unit.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

Before the present invention is described in greater detail, it should be noted that like elements are denoted by the same reference numerals throughout the disclosure.

Referring to FIGS. 1 to 3, the first preferred embodiment of a seat cushion according to the present invention is adapted to be mounted on a chair unit 1. In this embodiment, the chair unit 1 is an armchair constructed by welding together a plurality of rod members, and includes a seat member 11, a leg unit connected to the seat member 11 for supporting the seat member 11 on the ground and having four legs 12, a back rest 13 fixed on and extending upwardly from a rear side of the seat member 11, and two armrests 14 disposed respectively at two sides of the seat member 11. In practice, the seat cushion of the present invention can be mounted on other chair units with various designs, and is not limited for application to the exemplary chair unit 1. The seat cushion of the present invention comprises a cushion body 2 and a connecting device 3. The cushion body 2 includes a seat cushion portion 21, a back cushion portion 22, two arm cushion portions 23, and two marginal portions 24. The seat cushion portion 21 is adapted to be disposed on top of the seat member 11, and is made by sewing leather or a fabric material to form an outer sleeve, and then filling the outer sleeve with a soft material, such as a foam body. The back cushion portion 22 has a structure similar to that of the seat cushion portion 21, is sewn fixedly to a rear side of the seat cushion portion 21, and is disposed to rest in front of the backrest 13. The arm cushion portions 23 have a structure similar to those of the seat cushion portion 21 and the back cushion portion 22, and are sewn fixedly and respectively to left and right sides of the seat cushion portion 21. The marginal portions 24 are sewn fixedly and respectively to the arm cushion portions 23 at locations distal from the left and right sides of the seat cushion portion 21. Each of the marginal portions 24 is a piece of leather in this embodiment. In practice, the seat cushion portion 21, the back cushion portion 22, and the arm cushion portions 23 can be formed integrally, or, together with the marginal portions 24, can be made of the same soft material with the sewing lines differentiating among the portions, and with the marginal portions 24 being dispensed with the need to be filled with the foam body.

The connecting device 3 is provided for connecting detachably the cushion body 2 to the chair unit 1, and includes a seat connecting unit 31, a back connecting unit 32, and two side connecting units 33. The seat connecting unit 31 is provided for positioning the seat cushion portion 21 on the seat member 11 of the chair unit 1, and includes a seat strap 311 sewn fixedly to a bottom side of the seat cushion portion 21, as best shown in FIG. 2, and a pair of releasable seat fasteners 312 sewn fixedly and respectively to two ends of the seat strap 311. The back connecting unit 32 has a structure substantially similar to that of the seat connecting unit 31, and is provided for positioning the back cushion portion 22 on the backrest 13 of the chair unit 1. The back connecting unit 32 includes a back strap 321 sewn fixedly to a rear side of the back cushion portion 22, and a pair of releasable back fasteners 322 sewn fixedly and respectively to two ends of the back strap 321.

The side connecting units 33 are provided for positioning respectively the arm cushion portions 23 on the armrests 14 of the chair unit 1. Each of the side connecting units 33 includes a first fastening unit 331 sewn fixedly to an inner bottom portion of a respective one of the arm cushion portions 23 at a location proximate to the seat cushion portion 21, and a second fastening unit 332 sewn fixedly to a respective one of the marginal portions 24. In this embodiment, the first and second fastening units 331, 332 are configured as a pair of male and female releasable fastener straps having hooks and loops.

During assembly, the cushion body 2 is mounted on the chair unit 1, the seat strap 311 is wrapped around a rod member of the seat member 11, and the seat fasteners 312 are inter-engaged so as to secure the seat cushion portion 21 on the seat member 11, as best shown in FIG. 2. Then, the back strap 321 is wrapped around a rod member of the backrest 13, and the back fasteners 322 are inter-engaged so as to secure the back cushion portion 22 on the backrest 13. Afterwards, the arm cushion portions 23 are wrapped around the armrests 14, and the first and second fastening units 331, 332 of each of the side connecting units 33 are inter-engaged so as to secure each of the arm cushion portions 23 on the respective armrest 14, as best shown in FIGS. 2 and 3. Thus, through the seat connecting unit 31, the back connecting unit 32, and the side connecting units 33 of the connecting device 3, the cushion body 2 can be secured on the chair unit 1. The seat member 11, the backrest 13, and the armrests 14 of the chair unit 1 are all covered with soft cushion bodies, as shown in FIG. 4. When the cushion body 2 is not needed or must be washed, it is simply detached from the chair unit 1 through the connecting device 3.

Referring to FIG. 5, the second preferred embodiment of a seat cushion according to the present invention is shown to be substantially similar to the first preferred embodiment. However, in this embodiment, the first and second fastening units 331′, 332′ of each of the side connecting units 33′ are configured as a pair of releasable male and female snap fasteners.

Of course, the first and second fastening units 331, 332 of each of the side connecting units 33 maybe replaced with a button-type fastener, or a pair of strings that can be tied together. Furthermore, the seat connecting unit 31 and the back connecting unit 32 may have other structures, and the number of the seat connecting unit 31 and the back connecting unit 32 may be increased or decreased depending on the size of the seat cushion portion 21 and the back cushion portion 22, respectively.

From the aforementioned description of the present invention, it is apparent that the cushion body 2 is detachably connected to the chair unit 1 through the connecting device 3, such that the seat member 11 has a seat cushion portion 21 on top of the same, the backrest 13 has a back cushion portion 22 in front of the same, and the armrests 14 are covered respectively by the arm cushion portions 23. As such, all the portions to be contacted by the user are covered with soft cushion bodies, thereby providing more comfort to the user during use of the chair unit 1.

While the present invention has been described in connection with what is considered the most practical and preferred embodiments, it is understood that this invention is not limited to the disclosed embodiments but is intended to cover various arrangements included within the spirit and scope of the broadest interpretation so as to encompass all such modifications and equivalent arrangements. 

1. A seat cushion adapted to be detachably connected to a chair unit, the chair unit including a seat member, a leg unit for supporting the seat member on the ground, a backrest connected to the seat member, and two armrests disposed respectively at two sides of the seat member, said seat cushion comprising: a cushion body including a seat cushion portion adapted to be disposed on the seat member, a back cushion portion connected to a rear side of said seat cushion portion, and two arm cushion portions connected respectively to left and right sides of said seat cushion portion and adapted to cover the armrests; and a connecting device for connecting detachably said cushion body to the chair unit, said connecting device including two side connecting units for positioning respectively said arm cushion portions on the armrests, each of said side connecting units including a first fastening unit connected to a respective one of said arm cushion portions proximate to said seat cushion portion, and a second fastening unit connected to the respective one of said arm cushion portions distal from said seat cushion portion, said first and second fastening units being inter-engaged to position the respective one of said arm cushion portions on the respective one of the armrests.
 2. The seat cushion as claimed in claim 1, wherein said first and second connecting units are configured as fastener straps having hooks and loops.
 3. The seat cushion as claimed in claim 1, wherein said first and second connecting units are configured as male and female snap fasteners.
 4. The seat cushion as claimed in claim 1, wherein said cushion body further includes two marginal portions connected respectively to said arm cushion portions distal from said seat cushion portion, said second fastening unit of each of said side connecting units being secured on a respective one of said marginal portions.
 5. The seat cushion as claimed in claim 1, wherein said connecting device further includes a seat connecting unit for positioning said seat cushion portion on the seat member, said seat connecting unit including a seat strap connected fixedly to a bottom side of said seat cushion portion, and a pair of releasable seat fasteners connected fixedly and respectively to two ends of said seat strap.
 6. The seat cushion as claimed in claim 1, wherein said connecting device further includes a back connecting unit for positioning said back cushion portion on the backrest, said back connecting unit including a back strap connected fixedly to a rear side of said back cushion portion, and a pair of releasable back fasteners connected fixedly and respectively to two ends of said back strap. 